I find it kind of funny, I find it kind of sad..

I know I have used part of the lyrics of the song for the name of "Mad World" by Gary Jules (very original, I know) for the name of my article, but don't get confused. I don't want to write the article about Gary Jules or about this song, no.. I just wanted to write about something I was thinking about these days a lot. And the concrete question is:

What actually is humour?

Well, actually something I don't know exactly and don't even can know, because every person in the world has different kind of humour and has his/her own definition of what it is. 

Sometimes when I'm bored or sleepy and I don't want to go to bed yet, I just switch  my notebook on and go to watch some funny videos or animations just because I want to laugh. (Sometimes I'm like: ,,Oh, what am I doing with my life?") But strange thing is: One day I think that this and this video is extremely funny and the other day I'm watching it again saying to myself: That is not even funny, why have I laughed at this so much? 

It's not just about me. As I said -> Person = different kind of humour. For example: A friend of mine sent me a video last night and was laughing at this: 

Can someone explain it to me? That's why I think name of this article is fitting perfectly: I find it kind of funny, I find it kind of sad. For the first time I was smiling on the screen saying ,,What is the meaning of this?'' and then I was like ,,Who the hell would record this? Who would make his/her cat wearing clothes like this? 

Or this: Do you want to make funny video which could be a part of weird part of another YouTube videos as soon as possible? Just make an animation of two-legged horse running nowhere and add nonsense music as a background.

I wonder why am I even laughing at this so hard sometimes. As I said, when people are tired, they are just too tired to think about thing like this. 

Another videos I like watching are some of the "Letsplayers" (I mean people -mostly boys/men- who plays videogames and makes comments to it). Just take a look at this guy:

I do not even know what is so funny here, but his laugh.. his laugh is fabulous, thank you so much, boy, you made my day better! :D

I'm not supossed to make analysis of what is or is not funny, that's what I want to know from you! 

What for you is worth watching and what makes you laugh? Do you like smiling/laughing or you prefer being serious? :) 

Thanks a lot for comments! 

I'm sorry about this article, but I didn't have any idea about what I should write and could be interesting for you. I just wanted to apologize because I know that reading this could probably be pretty awkward. 

Have a nice day.